Egbert smith allen



(No Model.) 7

R. S. ALLEN.

MACHINE FOR CUTTING LEATHER.

Patented Oct. 17, 1882.

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vfnvevziof: W/M 42% new l and bar 1), is a coil-spring, 1".

UNITED STATES PATENT OFFICE.

ROBERT SMITH ALLEN, oE DEEEINe, MAINE, AssIcNoR To eHAELEs E.

MORRILL, ()F sAME PLAeE. I

MACHINE FOR CUTT ING LEATHER.

SPECIFICATION forming part of Letters Patent No. 266,004, dated October17, 1882.

Application filed March 7, 1862. (No model.)

To all whom it may concern:

Be it known that I, RoBEET SMITH ALLEN, of Deering, in the county ofCumberland and State of Maine, have invented certain new and usefulImprovements in Machines for Cutting Leather; and I do hereby declarethat the following is a full, clear, and exact description of theinvention, that will enable others skilled in the art to which itappertains to make and use the same, reference being bad to theaccompanying drawings, forming a part of this specification, in which-Figure l is a side elevation; Fig. 2, a front elevation, and Fig. 3 adetail showing the ratchet and pawl.

In preparing shoe-bindings the tanned skins are first cut into strips ofdouble the width of the binding to be made.

My invention has reference to a machine for so cutting the skins, whichis described as follows.

Upon the top of the frame of the machine (see Figs. 1 and 2) is placedthe horizontal shaft to, having three eccentrics, b, c, and d. Theeccentrics Z) and c, which are similarly situated on the shaft a, carrythe rods ff, of equal length, which are at their lower ends pivoted tothe knife or cutterg at the same distance from the shaft a. Thecutting-edge of the knife 9 is not parallel with the shaft a, but is atone end slightly lower than at the other. The sides of this knife orcutter run in vertical grooves in or near the sides of the frame of themachine, and just behind the steel plate, which is placed at the rear ofthe table It and parallel with the knife g. The front of the knife orcutter plate has at each side an eyelet, Z, through each of which passesa pin or stud, 8, having a stopat its upper end,and being rigidlyattached atthelowerend to the barp. Sgrronnding the pin or stud s, andbetween the eyelet Connected with the eccentric d is the rod 0, which ispivoted at the lower extremity to the lever n, which lever rotates onthe shaft 8.

Rigidly attached to the shaft 8 are the cogwheel at and the ratchet l. Apawl matching the ratchet is pivoted to the lever n, the pawl beingpressed against the ratchet by a spring.

On the outer surface of the ratchet is a curved slide, at, having acurved slot concentric with the ratchet, through which, by means ofsetscrews, the slide is secured to the ratchet and adjusted. The lowerend of this slide toward the pawl should be of such shape that as theslide is moved toward the pawl it willcome in contact with it.

Matching the gear on is a smaller gear, 2, which is rigidly fixed to ashaft, 11, carrying a frictiomroller, 00, which runs parallel with thecutter nearly the whole width of the table, with which it is quite ornearly in contact throughout its length.

Connected with each ofthejournals in which the shaft '0 is hung are rodsextending vertically downward and connecting with the lever 2, by meansof which the friction-roller a may be raised from the table.

The eccentric d should be so adjusted on the shaft a that while therodsfandfare ascending the rod 0 will be descending.

The operation of the deviceisobvious. The skin to be cut is placed uponthe table, and the roller being raised the edge of the skin is passedbeneath the roller, which is then released. The rod 0, descending,presses down the lever 11, by means of which the gear m is given part ofa rotation, and the friction-roller thus rotated carries forward beyondthe edge of the table the width of skin which it is desired to out olf.As the skin is being carried forward the cutter descends, and when theskin has reached the proper point the bar It holds it until the cutterhas descended and begun to rise again. As the cutter rises thefrictionroller carries forward another width of skin. The width of skinto be cutoff is regulated by the number of teeth in the ratchet l, andby means ofthe curved slottedslide a. (See Fig.3.)

By means of the set-screws the slotted slide a may be moved to the rightor left. When moved to the left to the extent admitted by the slot (seeFig. 3.) no part of the slide will be in contact with the pawl, whateverthe position of the rod 11. By carrying the slide a to the right (seeFig. 3) its lower end may be so placed that when the red at is fullyraised the pawl cannot come in contact with the ratchet, and will onlyconnect with the ratchet when the rod 42 has descended a portion of theare it describes. By thus adjusting the position of the slide a theamount or degree of revolution given the ratchet by the pawl may beadjusted or controlled, and the necessity for changing the ratchetwhenever a change in the width of leather to be cut is desired 01)-viated.

What I claim as my invention, and desire to secure by Letters Patent ofthe United States of America, is-

1. In a machine for cuttingleather, the combination of the shaft a,eccentrics I) and 0, rods ff, cutter or knife g, and bar 1), withsprings a",

for the purposes set forth.

R0 BERT SMITH ALLEN.

Witnesses:

DAVID W. SNOW, G. E. BIRD.

